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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Birthing process (termination of gestation)






2. Animals which have only one estrous cycle (ex: dog - fox)






3. What makes the milk flow through the mammary glands?






4. 14-19 (17) days






5. Microscopic - make sure not sterile - very few bulls are actually tested






6. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm






7. 4-6 days






8. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat






9. 45-60 days after breeding; re-breed as required






10. Larger the cow - more milk is produced; smaller the cow - less milk is produced






11. Check feet and legs - look for masculine traits in build such as crest and muscling






12. Look for infection - split - and rupture of the penis






13. (LH) stimulates the Leydig cells to produce testosterone






14. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.






15. Can survive ~7 days in cow. vast majority <48 hours






16. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.






17. Front feet and head first. (except for hogs and dogs)






18. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract






19. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






20. 10-37 (21) days






21. Animals which have many estrous periods per year (ex: cow - sow)






22. Urinary calculi.






23. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract






24. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.






25. % of fat in milk. makes cheeses and ice cream. regulates cost of milk






26. 1. bring in new genes - 2. replace males with leg problems (difficulty breeding) Note: culling has a much greater emphasis in the dairy industry vs the beef industry.






27. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.

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28. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off






29. 1-3 days






30. Important 'landmark' during palpation






31. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells






32. Look for infection - split - and rupture of the penis






33. Days which have decreasing daylight hours

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34. 30 hours after estrus begins






35. 19-23 (21) days






36. FEED






37. Sperm production






38. The more stressed out the male is - the less sperm he is going to produce






39. Animal which has been castrated after puberty






40. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)






41. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






42. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase






43. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated






44. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.






45. 30-38 hours after estrus cycle begins






46. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.






47. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has






48. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated






49. Way to know everything is alright with the breeding male






50. Sperm production